High-low-temperature low-air-pressure test box

Abstract

The utility model discloses a high-low-temperature low-pressure test box, and relates to the technical field of test boxes. Comprising a box body, a locking assembly arranged on the outer side of the box body and used for connecting a box door and the box body in a sealed mode, and a replacement assembly arranged on the inner side of the box body and used for adjusting the height of a bearing plate so as to adapt to test materials of different specifications. Under the matching action of the positioning rod and the limiting hole, the height of the bearing plate can be adjusted, the bearing plate is supported, the shifting rod is shifted to drive the circular plate to move along the translation groove, the spring is driven to be compressed in the displacement process of the translation groove, and the positioning rod is synchronously driven to be separated from the limiting hole; the locking plate and the lock cylinder plate can be connected together under the action of the fixing screw rod, so that the sealing performance between the box body and the box door is improved, and the sealing performance of the box body and the box door is improved. The practicability of the test box is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to test box technical field, concretely is a high and low temperature low gas pressure test box. BACKGROUND

[0002] The high and low temperature low gas pressure test box is mainly used for aviation, spaceflight, electronics, national defense, scientific research and other industrial departments to determine the electrical engineering and technology products (including components, materials and instruments and meters). Under the action of high and low temperature and low gas pressure, storage and transportation reliability test can be carried out, and electrical performance parameters can be tested while the test piece is electrified.

[0003] The existing high and low temperature low gas pressure test box cannot adjust the internal partition space interval according to different sizes of test materials when the test chamber is in use because the partition plate inside the test chamber is fixedly installed, and therefore, the high and low temperature low gas pressure test box is provided. UTILITY MODEL CONTENT

[0004] The utility model discloses a high and low temperature low gas pressure test box to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a high and low temperature low gas pressure test box, comprising: a box body,

[0006] The locking assembly is arranged on the outside of the box body and is used for sealingly connecting the box door and the box body.

[0007] The replacement assembly is arranged on the inside of the box body and is used for adjusting the height of the bearing plate to adapt to different specifications of test materials.

[0008] The replacement assembly comprises a bearing plate, the bearing plate is located on the inside of the box body, the bottom end of the bearing plate is provided with a plurality of translation grooves, and the translation grooves penetrate into the inside of the bearing plate.

[0009] As one of the specific schemes in the technical scheme, the inside of the bearing plate is provided with a plurality of springs, one side of the spring is provided with a circular plate, the outer wall of the circular plate is provided with a lever, and the other end of the lever is provided with a positioning rod, and the positioning rod penetrates into the outside of the bearing plate.

[0010] As one of the specific schemes in the technical scheme, the other end of the positioning rod is located in the limiting hole on the two sides of the inner wall of the box body, the bottom end of the bearing plate is provided with a plurality of bearing rods, and the two ends of the bearing rod are located in the sliding groove on the inner wall of the box body.

[0011] As one of the specific schemes in the technical scheme, the locking assembly comprises a lock cylinder plate, the lock cylinder plate is located on the outside of the box body, the inside of the lock cylinder plate is provided with a locking plate, and the locking plate and the lock cylinder plate are connected through a fixed screw rod.

[0012] As a specific scheme of the technical scheme in the application, the locking plate is provided with a connecting rod on one side, and a convex block is arranged at the other end of the connecting rod.

[0013] As a specific scheme of the technical scheme in the application, the box body is provided with a heating unit at the top end, and is provided with a sealing groove and a control unit, is filled with a heat insulation layer, and is provided with a refrigeration unit on the inner side close to the bottom end.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The high-low temperature low air pressure test box can adjust the height of the bearing plate and support it under the cooperation of the positioning rod and the limiting hole, the circular plate is displaced along the translation groove by driving the driving rod, the spring is compressed in the displacement process of the translation groove, and the positioning rod is simultaneously driven to disengage from the limiting hole and enter the next limiting hole to adjust the height of the bearing plate, so that different sizes of test samples can be adapted or the positioning rod is disengaged from the limiting hole to disassemble and replace the bearing plate, the locking plate and the lock core plate can be connected together under the action of the fixing screw rod, so that the sealing property between the box body and the box door is increased, and the practicality of the test box is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an isometric schematic view of the utility model;

[0017] Figure 2 It is an isometric sectional view schematic view of the utility model;

[0018] Figure 3 It is an isometric internal sectional view schematic view of the utility model;

[0019] Figure 4 It is a sectional view schematic view of the utility model; Figure 2 It is an enlarged schematic view of A in the utility model;

[0020] Figure 5 It is a sectional view schematic view of the replacement assembly of the utility model;

[0021] Figure 6 It is a back sectional view schematic view of the replacement assembly of the utility model;

[0022] Figure 7 It is a sectional view schematic view of the utility model; Figure 5 It is an enlarged schematic view of B in the utility model.

[0023] In the figure: 1, box body; 101, control unit; 102, heating unit; 103, heat insulation layer; 104, refrigeration unit; 105, sealing groove; 2, locking assembly; 201, locking plate; 202, fixed screw; 203, lock core plate; 204, connecting rod; 205, convex block; 3, replacement assembly; 301, bearing plate; 302, sliding groove; 303, limiting hole; 304, bearing rod; 305, positioning rod; 306, translation slot; 307, lever; 308, spring; 309, round plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. The electrical components appearing in the text are all electrically connected with the master controller and 220V mains, and the master controller can be a conventional known device such as a computer.

[0026] In the description of the embodiments of the utility model, it should be noted that the directions or position relationships indicated by the terms "inner", "outer", "upper" and the like are based on the directions or position relationships shown in the drawings, or the directions or position relationships commonly placed when the utility model product is used, which are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated devices or elements must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as limiting the utility model.

[0027] As Figures 1-7 shown, the utility model provides a technical scheme: a high and low temperature low pressure test chamber, including box body 1, the box body 1 of test chamber adopts high-strength stainless steel material, has good corrosion resistance and sealing property, is used to provide experimental environment, locking assembly 2 is set up at the outside of box body 1, is used to seal the connection between the box door and box body 1, replacement assembly 3 is set up at the inside of box body 1, is used to adjust the height of bearing plate 301, to adapt to different specifications of test material, and can disassemble bearing plate 301.

[0028] As Figures 1-7As shown, in the embodiments of the present application, the box 1 is provided with a heating unit 102 at the top end, the box 1 is provided with a sealing groove 105 and a control unit 101, the box 1 is filled with a heat insulation layer 103, and the inner side of the box 1 close to the bottom end is provided with a refrigeration unit 104. Specifically, under the action of the heat insulation layer 103, the heat transfer can be effectively reduced, and the energy consumption can be reduced. The heat insulation layer 103 selects polyurethane foam and glass fiber as the filling material to reduce the heat transfer. The internal space of the box 1 can meet the test requirements of samples of different sizes. The refrigeration unit 104 adopts compressor refrigeration technology, which can quickly reduce the temperature in the box 1. The compressor refrigeration is prior art, and will not be described in detail here. The heating unit 102 adopts nickel-chromium alloy heating wire, which can increase the temperature in the box 1. The nickel-chromium alloy heating wire is prior art, and will not be described in detail here. The control unit 101 includes a temperature sensor, which can monitor the temperature in the box 1 in real time, realize accurate control of the temperature, and when high-low temperature and low air pressure test is needed, first place the sample on the bearing plate 301, and close the test box door. The required temperature and air pressure parameters are set through the control unit 101. When the set temperature is lower than the room temperature, the refrigeration unit 104 starts to reduce the air temperature in the box 1. The temperature sensor detects the temperature in the box 1 in real time. When the temperature reaches the set value, the refrigeration unit 104 automatically adjusts the refrigeration amount to maintain the temperature stable. When the set temperature is higher than the room temperature, the heating unit 102 increases the air temperature in the box 1. The temperature is accurately controlled through the feedback of the temperature sensor and the control unit 101.

[0029] As Figures 1-7As shown, in the embodiment of the present application, the replacement assembly 3 comprises a bearing plate 301 located inside the box 1, the bottom end of the bearing plate 301 is provided with a plurality of translation grooves 306 penetrating to the inside of the bearing plate 301, the inside of the bearing plate 301 is provided with a plurality of springs 308, one side of the spring 308 is provided with a round plate 309, the outer wall of the round plate 309 is provided with a push rod 307, and the other end thereof is provided with a positioning rod 305 penetrating to the outside of the bearing plate 301, the other end of the positioning rod 305 is located in the limiting hole 303 on the inner wall of the box 1, the bottom end of the bearing plate 301 is provided with a plurality of bearing rods 304, the two ends of the bearing rod 304 are located in the sliding groove 302 on the inner wall of the box 1, specifically, under the action of the bearing plate 301, the test sample can be supported and a containing environment is provided, the bearing plate 301 has good strength and thermal conductivity, and a plurality of penetration holes are provided on the bearing plate 301, which can ensure that the air in the box 1 circulates between the test samples, so that the air directly contacts the bottom end of the test sample, the height of the bearing plate 301 can be adjusted according to the size of the sample, the bearing rod 304 at the bottom end of the bearing plate 301 can assist the bearing plate 301 to provide support to enhance the strength of the bearing plate 301 and prevent deformation due to sample pressing, when the height of the bearing plate 301 is adjusted, the bearing rod 304 at the bottom end of the bearing plate 301 slides along the sliding groove 302 on the inner wall of the box 1, the sliding groove 302 is used for limiting and guiding the bearing rod 304, when the height of the bearing plate 301 needs to be adjusted or the bearing plate 301 needs to be disassembled, the worker pushes the push rod 307 with fingers, the push rod 307 is located in the translation groove 306, the translation groove 306 is used for guiding and limiting the push rod 307, and the width of the translation groove 306 is smaller than the diameter of the spring 308, and the length of the translation groove 306 is smaller than the length of the spring 308, but the translation groove 306 can meet the movement distance of the positioning rod 305, after the push rod 307 is pushed, the push rod 307 drives the spring 308 to compress through the round plate 309, the spring 308 can synchronously drive the positioning rod 305 to translate during the compression process, so that the positioning rod 305 is separated from the limiting hole 303, and under the action of the spring 308, the positioning rod 305 is ejected into another limiting hole 303, the limiting hole 303 is used for limiting the positioning rod 305, and the positioning rod 305 located in the limiting hole 303 can support the bearing plate 301, through the cooperation of the push rod 307 and the positioning rod 305, the bearing plate 301 can be disassembled and replaced, and the height of the bearing plate 301 can be adjusted to adapt to test samples of different sizes.

[0030] As Figures 1-7As shown, in the embodiment of the present application, the locking assembly 2 comprises a lock core plate 203 located outside the box body 1, and a locking plate 201 is arranged inside the lock core plate 203, the locking plate 201 and the lock core plate 203 are connected through a fixing screw 202, one side of the locking plate 201 is provided with a connecting rod 204, the other end of the connecting rod 204 is provided with a convex block 205, the convex block 205 is located in a sliding groove 302 on the box door, specifically, under the operation of the fixing screw 202, the sealing connection between the box body 1 and the box door can be increased, the box body 1 is provided with a sealing groove 105, the sealing groove 105 is used for accommodating a sealing strip on the box door, so that the connection is more closely, one side of the box door is provided with a sliding groove 302, the convex block 205 moves in the sliding groove 302, the sliding groove 302 is used for guiding the convex block 205, the convex block 205 is fixedly connected with the locking plate 201 through the connecting rod 204, the locking plate 201 and the lock core plate 203 can be connected and separated by moving the convex block 205, the locking plate 201 in the separated state can play the role of a handle, facilitating the opening and closing of the box door from the box body 1, in the connected state, the locking plate 201 can be fixed inside the lock core plate 203 through the fixing screw 202, the locking plate 201 and the lock core plate 203 are both threadedly connected with the fixing screw 202, the fixed connection between the lock core plate 203 and the locking plate 201 can increase the sealing connection between the box body 1 and the box door, and in the fixed connection state, the sealing strip on the box door moves in the sealing groove 105 on the box body 1.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended embodiments and their equivalents.

Claims

1. A high-low temperature low-gas-pressure test chamber, comprising: The utility model discloses a box (1), its characterized in that: Locking assembly (2) is arranged outside the box (1), is used for sealing connection between the box door and the box (1); Replacement assembly (3) is arranged inside the box (1), is used for adjusting the height of the bearing plate (301) to adapt to different specifications of test material; The replacement assembly (3) includes the bearing plate (301), the bearing plate (301) is located inside the box (1), and the bottom end of the bearing plate (301) is provided with a plurality of translation grooves (306) penetrating to the inside of the bearing plate (301).

2. The high-low temperature low pressure test chamber of claim 1, wherein: The inside of the bearing plate (301) is provided with a plurality of springs (308), one side of the spring (308) is provided with a circular plate (309), the outer wall of the circular plate (309) is provided with a lever (307), and the other end of the circular plate (309) is provided with a positioning rod (305) penetrating to the outside of the bearing plate (301).

3. The high-low temperature low pressure test chamber of claim 2, wherein: The other end of the positioning rod (305) is located in the limiting hole (303) on the two sides of the inner wall of the box (1), and the bottom end of the bearing plate (301) is provided with a plurality of bearing rods (304), and the two ends of the bearing rod (304) are located in the sliding groove (302) on the inner wall of the box (1).

4. The high-low temperature low pressure test chamber of claim 1, wherein: The locking assembly (2) includes a lock cylinder plate (203), and the lock cylinder plate (203) is located outside the box (1); a locking plate (201) is arranged inside the lock cylinder plate (203); and the locking plate (201) and the lock cylinder plate (203) are connected by a fixed screw rod (202).

5. A high-low temperature low pressure test chamber as defined in claim 4 wherein: One side of the locking plate (201) is provided with a connecting rod (204), and the other end of the connecting rod (204) is provided with a convex block (205) located in the sliding groove (302) on the box door.

6. The high-low temperature low pressure test chamber of claim 4, wherein: The top end of the box (1) is provided with a heating unit (102), the box (1) is provided with a sealing groove (105) and a control unit (101), the box (1) is filled with a heat insulation layer (103), and the inside of the box (1) close to the bottom end is provided with a refrigeration unit (104).

Images